net.sourceforge.plantuml.argon2.Util Maven / Gradle / Ivy
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PlantUML is a component that allows to quickly write diagrams from text.
// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
package net.sourceforge.plantuml.argon2;
public class Util {
public static String bytesToHexString(byte[] bytes) {
StringBuilder sb = new StringBuilder();
for (byte b : bytes) {
sb.append(String.format("%02x", b & 0xff));
}
return sb.toString();
}
public static byte[] hexStringToByteArray(String s) {
int len = s.length();
byte[] data = new byte[len / 2];
for (int i = 0; i < len; i += 2) {
data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character.digit(s.charAt(i + 1), 16));
}
return data;
}
public static long littleEndianBytesToLong(byte[] b) {
long result = 0;
for (int i = 7; i >= 0; i--) {
result <<= 8;
result |= (b[i] & 0xFF);
}
return result;
}
public static byte[] intToLittleEndianBytes(int a) {
byte[] result = new byte[4];
result[0] = (byte) (a & 0xFF);
result[1] = (byte) ((a >> 8) & 0xFF);
result[2] = (byte) ((a >> 16) & 0xFF);
result[3] = (byte) ((a >> 24) & 0xFF);
return result;
}
public static byte[] longToLittleEndianBytes(long a) {
byte[] result = new byte[8];
result[0] = (byte) (a & 0xFF);
result[1] = (byte) ((a >> 8) & 0xFF);
result[2] = (byte) ((a >> 16) & 0xFF);
result[3] = (byte) ((a >> 24) & 0xFF);
result[4] = (byte) ((a >> 32) & 0xFF);
result[5] = (byte) ((a >> 40) & 0xFF);
result[6] = (byte) ((a >> 48) & 0xFF);
result[7] = (byte) ((a >> 56) & 0xFF);
return result;
}
public static long intToLong(int x) {
byte[] intBytes = intToLittleEndianBytes(x);
byte[] bytes = new byte[8];
System.arraycopy(intBytes, 0, bytes, 0, 4);
return littleEndianBytesToLong(bytes);
}
}